SOLIDIFICATION SYNTHESIS OF PRESSURE-INFILTRATED AL ALLOY-2014-SIC PLATELET COMPOSITES

被引：16

作者：

ASTHANA, R

ROHATGI, PK

机构：

[1] Materials Department, University of Wisconsin-Milwaukee, Milwaukee

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1991年 / 144卷

关键词：

D O I：

10.1016/0921-5093(91)90223-A

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Cast Al alloy 2014-SiC platelet composites were synthesized using counter-gravity pressure-assisted liquid metal infiltration of packed beds of SiC platelets; the platelets used were stoichiometric a (hexagonal) phase with nominal dimensions of 30-500-mu-m diameter and 1-25-mu-m thickness. The composites were synthesized for a range of material and process parameters which include platelet size, surface chemistry of platelets, pressure levels and pressurization time. The microstructures of the matrix alloy solidifying in the constricted interstices between randomly oriented platelets were characterized. A theoretical discussion of the solidification structure formation in porous beds of SiC platelets is also presented.

引用

页码：169 / 178

页数：10